| Official Name: | Sweetwater Township, Michigan |
| Settlement Type: | Civil township |
| Pushpin Map: | Michigan#USA |
| Pushpin Label Position: | right |
| Pushpin Label: | Sweetwater Township |
| Pushpin Map Caption: | Location within the state of Michigan##Location within the United States |
| Mapsize: | 250 |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Michigan |
| Subdivision Type2: | County |
| Subdivision Name2: | Lake |
| Unit Pref: | Imperial |
| Area Total Km2: | 92.7 |
| Area Land Km2: | 92.5 |
| Area Water Km2: | 0.2 |
| Area Total Sq Mi: | 35.8 |
| Area Land Sq Mi: | 35.7 |
| Area Water Sq Mi: | 0.1 |
| Population As Of: | 2020 |
| Population Total: | 258 |
| Population Density Km2: | auto |
| Population Density Sq Mi: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation M: | 272 |
| Elevation Ft: | 892 |
| Coordinates: | 43.9508°N -85.9775°W |
| Postal Code Type: | ZIP code(s) |
| Postal Code: | 49304 (Baldwin) 49402 (Branch) |
| Blank Name: | FIPS code |
| Blank Info: | 26-77740[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1627146 |
Sweetwater Township is a civil township of Lake County in the U.S. state of Michigan. The population was 258 at the 2020 census.
According to the United States Census Bureau, the township has a total area of 35.8sqmi, of which 35.7sqmi is land and 0.1sqmi (0.20%) is water.
As of the census of 2000, there were 238 people, 116 households, and 74 families residing in the township. The population density was 6.7 per square mile (2.6/km). There were 352 housing units at an average density of 9.9 per square mile (3.8/km). The racial makeup of the township was 94.54% White, 2.52% African American, 0.42% Native American, and 2.52% from two or more races. Hispanic or Latino of any race were 1.26% of the population.
There were 116 households, out of which 13.8% had children under the age of 18 living with them, 52.6% were married couples living together, 5.2% had a female householder with no husband present, and 36.2% were non-families. 31.0% of all households were made up of individuals, and 11.2% had someone living alone who was 65 years of age or older. The average household size was 2.05 and the average family size was 2.51.
In the township the population was spread out, with 16.0% under the age of 18, 6.7% from 18 to 24, 18.5% from 25 to 44, 34.0% from 45 to 64, and 24.8% who were 65 years of age or older. The median age was 52 years. For every 100 females, there were 112.5 males. For every 100 females age 18 and over, there were 115.1 males.
The median income for a household in the township was $24,107, and the median income for a family was $26,667. Males had a median income of $31,042 versus $21,250 for females. The per capita income for the township was $12,037. About 11.5% of families and 18.5% of the population were below the poverty line, including 38.0% of those under the age of eighteen and 6.1% of those 65 or over.